Acquisition - Schedule of Supplemental Pro Forma Revenue and Net Earnings of The Combined Entity Had The Acquisition Date (Details) - USD ($) $ in Thousands	4 Months Ended
	Apr. 19, 2025	Apr. 20, 2024
Business Acquisition [Line Items]
Net sales	$ 1,590,117	$ 1,630,003
Net income attributable to Flowers Foods	$ 58,711	$ 52,026